<?php
echo $this->Form->create('Usuario', array(    
    'id' => 'formularioSubmit',
    'type' => 'post'));
echo $this->Form->hidden('id');
echo $this->Form->input('nome', array('label' => 'Nome', 'type' => 'text'));
echo $this->Form->input('user', array('label' => 'Usuário', 'type' => 'text'));
echo $this->Form->input('senha', array('label' => 'Senha', 'type' => 'password'));
echo $this->Form->input('email', array('label' => 'E-mail', 'type' => 'text'));
echo $this->Form->input('telefone', array('label' => 'Telefone', 'type' => 'text'));
?>
<label>Tipo de Acesso</label>
<input type="checkbox" name="data[Usuario][acessoAdm]" value="1" id="acesso"><img src="../img/admin.png" width="17">Admin
<?php echo $this->Form->end('Atualizar'); ?>
<script>
    $(document).ready(function() {
        var acesso = <?php echo $this->data['Usuario']['acessoAdm']; ?>;
        if (acesso == 1) {
            $('#acesso').attr({checked: 'checked'});
        }
    });    
</script>